Cobra
Klaus Voorhees
- Also known as
First appearance: Journey into Mystery (Marvel, 1952 series) #98 (November 1963).
Appearances
- The X-Men #2 — 1963-11-00
- Fantastic Four #28 — 1964-07-00
- Journey into Mystery #110 — 1964-11-00
- Journey into Mystery #111 — 1964-12-00
- Fantastic Four #33 — 1964-12-00
- Fantastic Four #34 — 1965-01-00
- Fantastic Four Annual #3 — 1965-10-00
- Daredevil #30 — 1967-07-00
- Daredevil #31 — 1967-08-00
- Daredevil #32 — 1967-09-00
- Thor #158 — 1968-11-00
- Captain America #163 — 1973-07-00
- Captain America #180 — 1974-12-00
- Captain America #181 — 1975-01-00
- Captain America #182 — 1975-02-00
- The Avengers #147 — 1976-05-00
- Daredevil #142 — 1977-02-00
- Daredevil #143 — 1977-03-00
- Marvel Team-Up #84 — 1979-08-00
- The Spectacular Spider-Man #46 — 1980-09-00
- Captain America #261 — 1981-09-00
- The Amazing Spider-Man #231 — 1982-08-00
- The Amazing Spider-Man #232 — 1982-09-00
- The Amazing Spider-Man #246 — 1983-11-00
- Captain America #308 — 1985-08-00
- Captain America #309 — 1985-09-00
- Captain America #310 — 1985-10-00
- Captain America #311 — 1985-11-00
- Captain America #313 — 1986-01-00
- Captain America #315 — 1986-03-00
- Captain America #319 — 1986-07-00
- Captain America #320 — 1986-08-00
- Captain America #341 — 1988-05-00
- Captain America #342 — 1988-06-00
- Captain America #343 — 1988-07-00
- Thor #394 — 1988-08-00
- Captain America #344 — 1988-08-00
- X-Men Annual #13 — 1989-00-00
- Web of Spider-Man Annual #5 — 1989-06-27
- Captain America #365 — 1989-12-00
- Captain America #366 — 1990-01-00
- Captain America #367 — 1990-02-00
- Quasar #9 — 1990-04-00
- Marvel Comics Presents #97 — 1992-01-00
- Avengers #10 — 1998-11-00
- Spider-Man Visionaries: Roger Stern #1 — 2007-04-25
- Free Comic Book Day 2007 (Spider-Man) #1 — 2007-06-10
- Captain America #29 — 2007-10-00
- Spider-Man: Swing Shift Director's Cut #1 — 2008-01-00
- Spider-Man: Brand New Day #1 — 2008-10-15
- Avengers Assemble #1 — 2010-13-00
- Captain America by Ed Brubaker #4 — 2013-01-16
- Wolverine: First Cuts #[nn] — 2013-06-12
- X-Men: Age of Apocalypse - Dawn #[nn] — 2016-02-10
- Spider-Man: Brand New Day - The Complete Collection #1 — 2016-04-27
- Captain America: Steve Rogers #11 — 2017-04-00
- Captain America: Steve Rogers #2 — 2017-04-12
- Captain America Epic Collection #15 — 2018-04-25
- Black Widow: Marvel Team-Up #[nn] — 2020-03-11
- Mighty Marvel Masterworks: Thor #1 — 2021-10-13
- Sinister War #[nn] — 2021-11-24
- Fantastic Four Anniversary Tribute #1 — 2022-01-00
- Avengers Epic Collection #8 — 2022-08-03
- Captain America: Heroes Return - The Complete Collection #2 — 2022-08-03
- Daredevil Epic Collection #7 — 2024-04-03
- Captain America Modern Era Epic Collection #2 — 2024-10-23
- Immortal Thor #16 (777) — 2024-12-00
- Immortal Thor #17 (778) — 2025-01-00
- Immortal Thor #4 — 2025-07-02
- Mortal Thor #6 (792) — 2026-03-00
- Amazing Spider-Man Epic Collection #13 — 2026-06-03
- Captain America by Mark Gruenwald Omnibus #3 — 2026-07-01
- Fantastic Four by Dan Slott Omnibus #1 — 2026-07-15